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P0637 is a diagnostic trouble code (DTC) for "Power Steering Control Circuit High". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the检查引擎灯诊断$ 114.99。一旦我们能够诊断出该问题，就会为您提供建议的修复程序的前期报价，并获得20.0美元的折扣作为维修的信用。我们所有的维修都得到了我们12个月 / 12,000英里的保修。
The P0637 trouble code detects an issue with the power steering control circuit
P0637代码是一种通用OBD-II故障代码，它标志着动力转向控制电路的问题。动力转向控制电路将数据发送到动力总成控制模块（PCM），以及许多其他控制模块，例如传输控制模块，牵引控制模块和燃油注入控制模块以及巡航控制模块。当PCM或其他控制模块之一检测到幂式转向控制电路的问题时，将触发P0637故障代码。
The P0637 trouble code is usually the result of a malfunctioning power steering pressure or position switch. There are other possible causes though, including:
The P0637 trouble code will usually be joined by the Check Engine Light illuminating on the vehicle’s dashboard. It is common for the power steering system to stop working, which means that steering may be difficult and heavy, and also erratic.
P0637代码将通过使用标准OBD-II故障代码扫描仪来诊断。知名的机械师将使用扫描仪评估冻结框架数据并收集有关代码的信息。该机械师还将寻找已检测到的任何其他故障代码（应始终按照其显示的顺序解决代码）。然后，机械师将重置故障代码并重新启动车辆，以查看P0637和任何随附的代码是否返回。如果代码未返回，则可能是错误地触发的，或者代表间歇性问题。
If the P0637 trouble code returns, the technician will perform a visual inspection of the system’s electrical components, as well as the ground wire and control module ground strap. If any of these parts is damaged or defective, they should be replaced immediately.
接下来，机械师将检查动力转向压力或位置开关，因为这是造成P0637代码的罪魁祸首。如果仍未找到问题，机械师可以使用CAN扫描仪仔细研究控制模块。
替换任何组件时，需要重置故障代码，并再次重新启动车辆以查看代码是否返回。一旦解决问题，这将有助于机械师弄清楚。
The most commonly made mistake in diagnosing the P0637 code comes from a failure to follow the standard OBD-II trouble code diagnosis protocol. The protocol should be followed at all times, step by step, to ensure that the inspection and repair is accurate and efficient.
即使P0637代码在冻结帧数据中的其他代码之前，也要在P0637代码之前诊断其他故障代码。由于随附的代码可能仅是由于P0637代码而触发的，因此首先解决它们可能会导致不必要的维修。
具有检测到P0637代码的车辆仍然可以驱动。但是，这辆车可能没有运行的动力转向系统。动力转向系统在任何车辆中都是非常重要的安全功能，没有它，转向非常困难。因此，应立即解决P0637代码。
P0637故障代码的一些潜在维修是：
P0637代码通常会伴随其他可驱动性故障代码，例如喷油器代码，传输代码和发动机失火代码。
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